Tomato Blossom End Rot and Different Tomato Diseases

 

The blossom end rot can be caused by irregular watering or not following the instructions carefully when making up your liquid fertiliser feed. All you can do when the problem occurs is remove the rotted fruits and water and feed with more care in the future. Watering and feeding regularly also important if you don't want other fruit disorder to set in. For example fruit with yellow or orange blotches which fails to ripen can result from nutrient deprivation, although it is also caused by direct sunlight overheating the fruit. You can't do anything about the fruit that is already blotched, but you can ensure that other trusses don't get the same way by shading and ventilating the greenhouse and by feeding the plants regularly. antracol

Greenback fruit on which the stalk end does not ripen and remains hard and green also results from overheating by direct sunlight, although it can be sometimes be caused by potash deficiency. To remedy shade and ventilate the greenhouse and feed with high potash fertiliser. mahyco

Bronzing of the fruit is a different thing. This is a virus disorder and the only sensible course of action is to lift and burn the affected plants. The fruit is not worth saving it's not very palatable.

The heavy ash grey mould is a sure indicator of botrytis, a fungal disease that gets into the plant through the stumps of carelessly trimmed leaves and shoots. It may occur outdoors and indoors. First remove the diseased fruits before they infect their neighbours. Then cut back infected leaves and side shoots to the stem. Spray the wounds with a fungicide against botrytis. Keep the atmosphere as dry as possible, giving plenty of ventilation day and night. Remove two or three lower leaves to allow free air circulation. madhulika

Leaf mould is starts among the lower leaves with yellow patches developing on the tops and a purple brown mould on the undersides. Ventilate the greenhouse and remove the affected leaves. Spray with fungicide. saaf fungicide

Tomato Mosaic Virus is one of the main virus afflictions, resulting in yellow mottled green leaves. They sometimes become almost fern-like. Brown vertical stripes appear on the stems and the plant growth is usually checked. Destroy the affected plants and roots too. upl products

Potato blight usually affects only outdoor tomato plants. Brown areas appear on the leaves and dark streaks on the steams. The leaves die and in wet weather the fungus thrives and appears as a mass of white threads on the underside of the leaves. Destroy the affected plants and as prevention spray healthy plants with a copper compound every 2 weeks. ridomil gold

Didymella stem rot appears as brown scars and slimy black dots on the stems just above ground level. Burn the infected plants and spray the lower stems of the remainder with a copper based fungicide. Burn these plants at the end of the season and thoroughly disinfect the greenhouse. rasi seeds

Oedema manifest on the stems in bumps and blotches and sometimes on the leaves too, caused by excess moisture in the soil or in the atmosphere. To counteract increase the greenhouse ventilation and reduce the humidity. Using petroleum oil to control spider mite can also cause oedema on tomatoes, in which case stop using it.

Phytophthora stem rot is a brown or black fungus followed by a white, fluffy growth on the main stem. It is usually encouraged by the careless application of fertilizers. There is no cure, burn all the affected plants and disinfect the greenhouse and the soil for the next season.